1. Trial Objectives 1.Mempelajari 7 segment LED Display. 2.Dapat configure, controls 7 Segment LED Display module CITS's NX-2000. 3.Dapat create a simple program that will be displayed on the 7 Segment LED Display.

2. Basic Theory

7 Segment meerupakan combination of 7 pieces of LED display dirangkaian a number. 7 segment consists of 2 types of the Common katode (katode linked together) and the Common anode (Anoda linked together), in this experiment used katode is common.

7 Segment LED Display is one part of the module CITS NX-2000 we can use the display to show the number of programs that we sent through a parallel module. To configure the system so we need a parallel module and the module 7 Segment LED Display CITS's NX-2000.

To create a display then the number we need segment (LED) that we need, and mengnonaktifkan segment (LED) that are not needed. For example, to create a number 1, then activate the LED b (D1) and c LED (D2), and disabling the other LED. Next pengamatannya table below the display output.

Dp

g

f

e

d

c

b

a

D7

D6

D5

D4

D3

D2

D1

D0

Address

Output

0

0

1

1

1

1

1

1

&HEF

0

0

1

0

0

0

1

1

0

&H06

1

0

1

0

1

1

0

1

1

&H5B

2

0

1

0

0

1

1

1

1

&H4F

3

0

1

1

0

0

1

1

0

&H66

4

0

1

1

0

1

1

0

1

&H6D

5

0

0

1

1

1

1

0

1

&H7D

6

0

0

0

0

0

1

1

1

&H07

7

0

1

1

1

1

1

1

1

&H7F

8

0

1

1

0

1

1

1

1

&H6F

9

0

1

1

1

0

1

1

1

&H77

A

0

0

1

1

1

1

0

0

&H7C

B

0

0

1

1

1

0

0

1

&H39

C

0

1

0

1

1

1

1

0

&H5E

D

0

1

1

1

1

0

0

1

&H79

E

0

1

1

1

0

0

0

1

&H71

F

1

1

1

1

1

1

1

1

&HFF

8

3. Tools and Materials

1. Parallel Board

2. PC with the programming language Microsoft Visual Basic

3. Parallel cable bus (P-Bus)

4. EX-02 LED 7 Segment Display Board

5. Adapter

4. Experiment Results

EX-02 on the 7 Segment Display LED board will display the number 0-9.setiap times in a click.

In the code & H5 = 1 digit to the LED lights.

In the code & H6 = 2 digits to the LED lights on.

In the code = & H0 to 3 digits on the LED lights.

In the code = & HC to 4 digits on the LED lights.

At HB & code = All digits on the LED lights.

5. Analysis and discussion

In the 7 segment LED display there is a 4 digit

Digits to 4 digits to 3 digits to 2 digits to 1

1. In the code & H5 = 1 digit to the LED lights.

The following command in inputkan the basic Ms.visual:

Dim index As Integer

Dim Number (0-9) As Integer

Private Sub Command1_Click ()

If index <>

Out & H378, Number (index)

Index = index + 1

Else

Index = 0

End If

Out & H37A, & H5

End Sub

Private Sub From_Load ()

Number (0) = & H3F

Number (1) = & H6

Number (2) = & H5B

Number (3) = & H4F

Number (4) = & H66

Number (5) = & H6D

Number (6) = & H7D

Number (7) = & H7

Number (8) = & H7F

Number (9 o'clock) H6F = &

End Sub

2. In the code & H6 = 2 digits to the LED that lights

The following command in inputkan on basic Ms.visual:

Dim index As Integer

Dim Number (0-9) As Integer

Private Sub Command1_Click ()

If index <>

Out & H378, Number (index)

Index = index + 1

Else

Index = 0

End If

Out & H37A, & H6

End Sub

Sub Private From_Load ()

Number (0) = & H3F

Number (1) = & H6

Number (2) = & H5B

Number (3) = & H4F

Number (4) = & H66

Number (5) = & H6D

Number (6) = & H7D

Number (7) = & H7

Number (8) = & H7F

Number (9) = & H6F

End Sub

3. In the code = & H0 to 3 digits on the LED lights

The following command in inputkan on basic Ms.visual:

Dim index As Integer

Dim Number (0-9) As Integer

Private Sub Command1_Click ()

If index <>

Out & H378, number (index)

Index = index + 1

Else

Index = 0

End If

Out & H37A, & H0

End Sub

Private Sub From_Load ()

Number (0) = & H3F

Number (1) = & H6

Number (2) = & H5B

Number (3) = & H4F

Number (4) = & H66

Number (5) = & H6D

Number (6) = & H7D

Number (7) = & H7

Number (8) = & H7F

Number (9) = & H6F

End Sub

4. In the code = & HC to 4 digits on the LED lights

Next inputkan commands in the basic Ms.visual:

Dim index As Integer

Dim Number (0-9) As Integer

Private Sub Command1_Click ()

If index <>

Out & H378, Number (index)

Index = index + 1

Else

Index = 0

End If

Out & H37A, & HC

End Sub

Private Sub From_Load ()

Number (0) = & H3F

Number (1) = & H6

Number (2) = & H5B

Number (3) = & H4F

Number (4) = & H66

Number (5) = & H6D

Number (6) = & H7D

Number (7) = & H7

Number (8) = & H7F

Number (9) = & H6F

End Sub

5. At HB & code = All digits on the LED lights

Following command in the inputkan on basic Ms.visual:

Dim index As Integer

Dim Number (0-9) As Integer

Private Sub Command1_Click ()

If index <>

Out & H378, Number (index)

Index = index + 1

Else

Index = 0

End If

Out & H37A, & HB

End Sub

Private Sub From_Load ()

Number (0) = & H3F

Number (1) = & H6

Number (2) = & H5B

Number (3) = & H4F

Number (4) = & H66

Number (5) = & H6D

Number (6) = & H7D

Number (7) = & H7

Number (8) = & H7F

Number (9) = & H6F

End Sub

To display such as hours are given with the interval timer 1000 = 1detik way: double click the icon timer ago disetting intervalnya the way click properties.

6. Conclusion

1. Segment 7 is the tool displays a number electronically. One segment can display a number from 1 - 9 with only the 7 LED fruit.

2. Results from the experiment that we do:

In the code & H5 = 1 digit to the LED lights.

In the code & H6 = 2 digits to the LED lights on.

In the code = & H0 to 3 digits on the LED lights.

In the code = & HC to 4 digits on the LED lights.

At HB & code = All digits on the LED lights.

3. Ms Degan use. Visual basic and connected with 7 Segment LED display we can create a program such as a digital clock, calculator, timer in the red light, and another - another.